[help] thermodynamics question!! 1. The problem statement, all variables and given/known data Initially, a piston-cylinder has a volume of 120L and contains a saturated liquid-vapour mixture of water at 150°C, in which 86% of the water is in the liquid phase. The water is heated at constant pressure until it is saturated vapour. Determine the heat required for this process. Also show the process in a T-v diagram. 2. Relevant equations 1. i think the table A-4 and A-5 is required 2. h=hf + x hfg ?? 3. The attempt at a solution dont know how to start.